CN211981657U - Double-end concentric DC brushless motor - Google Patents

Abstract

The utility model relates to a double-end concentric DC brushless motor, the motor includes stator module, rotor module that each other cover and establish the equipment, the end cover is configured to the both ends of stator module, rotor module, the output shaft both ends of rotor module wear out through corresponding end cover respectively, each end cover department installs the bearing of output shaft adaptation, each end cover is all assembled and is had sealed lid, the sealed cap housing is located the periphery at output shaft both ends, the tip at output shaft both ends all exposes in corresponding sealed lid, in order to be connected with the mill; the stator assembly comprises an aluminum casing, a framework wound with an enameled wire is arranged in the aluminum casing, the framework is arranged outside a silicon steel sheet, and a wiring board is fixed outside the framework; the enameled wires and the silicon steel sheets are encapsulated by heat-conducting and insulating colloid. Can use with the driver cooperation of high performance among the concentric DC brushless motor of double-end, whole mechanism operates steadily, the temperature is low, and the noise is little, efficient, can process the high rigidity material, is applicable to the abrasive polishing field.

Description

Double-end concentric DC brushless motor

Technical Field

The utility model relates to a brushless motor.

Background

Permanent magnet brushless DC motor is more common, and the application is all very extensive in daily life, industrial production, industrial automation equipment, and the structure such as stator, rotor that includes the equipment connection in this type of motor usually, because structural defect leads to this type of motor to have when using that the noise is big, heat conduction is poor shortcoming, has improved needs.

SUMMERY OF THE UTILITY MODEL

One technical problem addressed by one aspect of the present disclosure is to provide an improved dc brushless motor.

The utility model provides a technical scheme that its technical problem adopted is: the concentric DC brushless motor of double-end, the motor is including overlapping stator module, the rotor subassembly of establishing the equipment each other, the end cover is disposed at stator module's both ends, the output shaft both ends of rotor subassembly are respectively via corresponding the end cover is worn out, each the end cover department installs the bearing of output shaft adaptation, each the end cover all is assembled sealed lid, sealed housing locates the periphery at output shaft both ends, the tip at output shaft both ends all exposes in corresponding sealed lid to be connected with the mill. The stator assembly comprises an aluminum casing, a framework wound with an enameled wire is arranged in the aluminum casing, the framework is arranged outside a silicon steel sheet, and a wiring board is fixed outside the framework; the enameled wires and the silicon steel sheets are encapsulated by heat-conducting and insulating colloid.

According to the double-head concentric brushless direct current motor, the rotor assembly comprises the permanent magnet with the inner hole, and the output shaft penetrates through the inner hole of the permanent magnet.

According to the double-head concentric direct current brushless motor, the permanent magnet is high-grade magnetic steel.

According to the double-head concentric brushless DC motor, the bearing is arranged on the end cover through the cover plate, and the sealing O-shaped ring is arranged between the cover plate and the end cover.

According to the double-head concentric brushless DC motor, the sealing cover is provided with the mounting hole and the positioning step.

As for the double-head concentric direct current brushless motor, the grinding discs at two ends of the output shaft are self-adhesive polishing discs.

One advantageous effect brought by one aspect of the present disclosure: the improved motor has the advantages of low noise and good heat conductivity, and can well meet the process requirements of polishing and grinding.

Drawings

Certain embodiments of the invention will now be described in detail, by way of example and not limitation, with reference to the figures, in which like reference numerals identify identical or similar parts or features. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

In the drawings:

FIG. 1 is a schematic view of the present invention;

fig. 2 is a first partial schematic view of the present invention;

FIG. 3 is a second partial schematic view of the present invention;

FIG. 4 is a third partial schematic view of the present invention;

the designations in the figures illustrate the following:

1. a sealing cover; 2. a stator assembly; 3. a rotor assembly; 30. a permanent magnet; 31. an output shaft; 4. an end cap; 5. a grinding disc; 6. a bearing; 60. a cover plate; 61. sealing the O-shaped ring; 7. an aluminum housing; 8. silicon steel sheets; 9. enamelled wires; 10. a framework; 11. a wiring board; 12. and (3) colloid.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them.

All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to the attached drawings 1-4, a double-head concentric brushless dc motor is shown, the motor includes a stator assembly 2 and a rotor assembly 3 which are sleeved with each other, end caps 4 are disposed at two ends of the stator assembly 2, two ends of an output shaft 31 of the rotor assembly 3 respectively penetrate out through the corresponding end caps 4, bearings 6 adapted to the output shaft 31 are mounted at the end caps 4, and the bearings 6 can be deep groove ball bearings 6, so that the bearing capacity is high, the speed is high, the current is low, and the motor stability is high. Each end cover 4 is assembled with a sealing cover 1, the sealing covers 1 are covered on the peripheries of two ends of the output shaft 31, and the end parts of the two ends of the output shaft 31 are exposed out of the corresponding sealing covers 1 to be connected with the grinding disc 5; the stator assembly 2 comprises an aluminum casing 7, a framework 10 wound with an enameled wire 9 is installed in the aluminum casing 7, the framework 10 is installed outside a silicon steel sheet 8, and a wiring board 11 is fixed outside the framework 10; the enameled wires 9 and the silicon steel sheets 8 are encapsulated by a colloid 12 which can conduct heat and insulate.

During the equipment, put into stator module 2 with rotor subassembly 3 through the frock, bearing 6 is pressed into on rotor subassembly 3's output shaft 31 through the frock, and at stator module 2 of equipment state, rotor subassembly 3 both ends lid 4 upper end cover 4 and with the screw fastening, then install sealed lid 1 respectively through the screw fastening on corresponding end cover 4, sealed lid 1 covers the output shaft 31 both ends of wearing out from end cover 4 basically, only two tip of output shaft 31 are assembled through sealed lid 1 and the mill 5 in the outside. Rotor subassembly 3 can adopt high grade magnet steel as permanent magnet 30, and it has the hole, and output shaft 31 wears out from the hole and goes out, and high-grade permanent magnet material, temperature resistant grade are high, and anti demagnetization nature is strong.

When stator module 2 assembles, fold silicon steel sheet 8 to the height that needs through high-speed punch press, fix skeleton 10 on silicon steel sheet 8, then go up enameled wire 9 with the coiling machine winding, weld wiring board 11 after that, form whole back heat jacket and put into aluminium casing 7, the embedment of enameled wire 9 and silicon steel sheet 8 is carried out to the material that the evacuation used the heat conductivity good, insulating good (like heat conduction glue) for the insulation and the heat conductivity of motor improve greatly, protection level, temperature resistance can be improved.

The stator assembly 2 is connected with a circuit through the wiring board 11 to form a magnetic field, and the magnetic field interacts with the magnetic field of the permanent magnet 30 in the rotor assembly 3, so that the rotation of the rotor assembly 3 is controlled, and the grinding disc 5 is driven to work. The mill 5 all has the setting in order to be more applicable to the technology of polishing grinding at output shaft 31 both ends, because cell phone case material needs two kinds or more abrasive material to accomplish the grinding technology usually, a double-sided motor can exert two kinds of grinding effects, cell phone case can directly switch to another processing of motor from rough grinding polishing to finish grinding polishing, practice thrift the time of changing abrasive material, two kinds of effects of a motor, reduce equipment cost, the double-sided grinding motor can reduce the crossbeam mechanism thickness of grinding equipment simultaneously, reduce equipment occupation space, a large amount of material cost has been practiced thrift. The millstones 5 at the two ends can adopt self-adhesive polishing discs, so that polishing materials made of various materials can be freely selected, and different grinding and polishing requirements can be met.

In some embodiments, the bearing 6 is mounted on the end cover 4 through a cover plate 60, and a sealing O-ring 61 is disposed between the cover plate 60 and the end cover 4 to enhance the sealing protection effect. Can set up the mounting hole on sealed lid 1, if quantity is four, use when supplying equipment fixing, for strengthening accurate, the stability of motor installation location, can set up location step and corresponding installation position adaptation on sealed lid 1.

In conclusion, the improved stator assembly 2 of the double-head concentric brushless DC motor is filled and sealed with the enameled wire 9 integrally through a material with good thermal conductivity and insulativity, so that the insulation and the heat conduction performance of the motor are greatly improved, the protection grade is strengthened, the rotor assembly 3 is made of a high-grade rare earth material (such as neodymium iron boron), can resist the high temperature of 180 ℃, and is strong in demagnetization resistance. The optimization of heat conductivity and high temperature resistance enables the motor to save compressed air for cooling. The arrangement of the sealing cover 1 improves the overall sealing and protecting performance of the motor, and effectively prevents sundries such as water, dust and the like from entering the motor. Can use with the driver cooperation of high performance among the concentric DC brushless motor of double-end, whole mechanism operates steadily, the temperature is low, and the noise is little, efficient, can process the high rigidity material, is applicable to the abrasive polishing field.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The concentric DC brushless motor of double-end, the stator module, the rotor subassembly of equipment, its characterized in that are established including overlapping each other to the motor: end covers are arranged at two ends of the stator assembly, two ends of an output shaft of the rotor assembly penetrate out of the corresponding end covers respectively, bearings matched with the output shaft are installed at the end covers, sealing covers are assembled on the end covers, the sealing covers are arranged on the peripheries of the two ends of the output shaft, and end parts of the two ends of the output shaft are exposed out of the corresponding sealing covers to be connected with a grinding disc; the stator assembly comprises an aluminum casing, a framework wound with an enameled wire is arranged in the aluminum casing, the framework is arranged outside a silicon steel sheet, and a wiring board is fixed outside the framework; the enameled wires and the silicon steel sheets are encapsulated by heat-conducting and insulating colloid.

2. The double-ended concentric dc brushless motor of claim 1, wherein: the rotor assembly comprises a permanent magnet with an inner hole, and the output shaft penetrates through the inner hole of the permanent magnet.

3. The double-ended concentric dc brushless motor of claim 2, wherein: the permanent magnet is high-grade magnetic steel.

4. The double-ended concentric dc brushless motor of claim 3, wherein: the bearing is installed on the end cover through a cover plate, and a sealing O-shaped ring is arranged between the cover plate and the end cover.

5. The double-ended concentric dc brushless motor of claim 1, wherein: the sealing cover is provided with a mounting hole and a positioning step.

6. The double-ended concentric dc brushless motor of claim 1, wherein: the millstones at the two ends of the output shaft are self-adhesive polishing discs.

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